Replacing One Upper Control Arm

33 32 071 - Replacing one upper control arm





Important!
The control arm to wheel carrier connection has been changed from a conical seat to a ball seat! Spare parts are offered for both variants.
To ensure a correct bolt connection, check before installing the control arm whether the seat for the control arm matches the seat for the wheel carrier.
Variants:
A - Conical seat
B - Ball seat





Note:
If the control arm is detached from the rear axle carrier, it is necessary after reinstallation to carry out a wheel/chassis alignment check.





Necessary preliminary tasks:
- Remove rear wheel Removing or Installing Front or Rear Wheel.
- E61: Deactivate and empty air spring system





Shown on vehicle at rear right:
Unclip line for pulse generator (1) from holder (2).
Only on right side: Unclip line for brake pad wear sensor (3) from holder (2).





Unscrew nut (1).
Remove control arm at top from wheel carrier.

Installation Note:
Keep control arm to wheel carrier connection clean and free from oil and grease.
Replace self-locking nut.
Tightening torque 33 32 8AZ Control Arms and Struts (Rear).





Unscrew nut (1).
Pull out bolt (2) and remove control arm.

Installation Note:
Note insertion direction of screw.
Replace self-locking nut.
Tighten bolt connection in normal position Moving Vehicle Into Normal Position.
Tightening torque 33 32 14AZ Control Arms and Struts (Rear).





Replacement:
Unclip holder on control arm.





After installation:
- E61: Activate and fill air suspension system
- Perform chassis alignment check